html,body {
    /* background: red; */
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}
body {
    overflow: auto;
}
header {
    position: relative;
}
.backimg {
    width: 100%;
    height: auto;
    overflow: hidden;
}
.logo {
    position: absolute;
    top: 50px;
    left: 0;
    right: 0;
    margin: auto;
    text-align: center;
}
.logo img {
    overflow: hidden;
}
.menu {
    line-height: 50px;
}
.clear {
    clear: both;
    width: 100%;
    height: auto;
}
.main {
    padding: 0 15%;
}
.mainLeft {
    width: calc(100% - 320px);
    margin-right: 20px;
}
.mainRight {
    width: 300px;
}
.caret {
    top: 25px;
    right: 0;
}
.colWarning {
    padding: 5px;
}
.submitBtn {
    padding: 15px;
}
.flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}